Roller grinding-mill.



PATENTED MAR. 21, 1905.

A. J. FORD.' `RGLLER GRINDIN-G' MILL.

AYPLIGATION FILED 0OT.12, 1904.

2 SHEETS-SHEET 1.

S513 @Ho-@neg PATENTED MAR. 2l, 1905.

A. J. FORD. ROLLER GRINDING MILL.

APPLICATION FILED 001212, 1904.

UNITED STA-TES Patented. Maron 2l, 1905.

Parleur Ormea.

ALBERT J. FORD, OF NEW YORK, N. Y., ASSIGNOR TO THE FUOHST LANG MFG.CO., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

ROLLER GRINDING-NHLL.

SPECIFICATION forming part of Letters Patent N o. 785,485, dated March21, 1905. `Application filed October l2, 1904. Serial No. 228.171.

To all 1.0700111, t may concern.

Be it known that I, ALBERT J. FORD, a citi- Azen of the United States,residing in New York,

borough of Manhattan, in the State of New York, have invented certainnew and useful Improvements in Roller Grinding-Mills, of

which the following is a specification.

This invention relates to improvements in mills which are employed forgrinding and mixing the colors used in themanufacture of printing andlithographing inks and other materials, said improvements being designedwith a View of facilitating the adjustment of the scraping-knife bywhich the color is removed from the end roller and conducted to asuitable receptacle.

The object of this invention is to arrange the scraper in such a mannerthat the adjustment can be made in a very accurate manner while thegrinding-mill is in motion; and for this purpose the invention consistsof a roller grinding-mill in which the scraper for removing the colorfrom the end roller is carried by a delivery-plate pivoted at its upperend to the frame supporting the grinding-machine and adjusted at itslower end by means of elbow-levers provided with antifriction-rollers,the shaft to which said levers are pivoted being actuated by anadjusting worm-gear, so as to properly adjust the delivery-plate, andthereby hold the scraper in close contact with the delivery-roller ofthe machine.

The invention consists, further, of certain details of construction andcombinations of parts, which will be fully described hereinafter andfinally pointed out in the claims.

ln the accompanying drawings, Figure 1 is a side elevation of myimproved roller grinding-mill. Fig. 2 is a plan view of the same; andFig. 3 is a detail section through the deliveryplate at right angles tothe scraper edge, showing the connection between the delivery-plate andscraper, said figure being drawn on a larger scale.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A designates a roller grinding-mill forgrinding and mixing colors for printing and lithographie inks, &c.

said mill being of the usual well-known construction. The rollers aresupported in journal-bearings in the supporting-frame of the machine,the journal-bearings for the shafts of the end rollers being capable ofadjustment by means of set-screws and jam-n uts passing through the endsof the supportingframe, so that they are rotated in close contact withthe intermediate roller. rThe color to be ground and mixed is fed to theroller at the righthand end of the mill and passed through between therollers to the front end roller and there delivered to an inclinedscraper S, inserted in a socket in the delivery-plate D, as shown inFig. 3. The upper end of said scraper is held in contact with thecircumference of the end roller, and the delivery-plateD is providedwith inclined flanges f for guiding the color delivered by the endroller to a suitable receptacle. (Not shown.) The delivery-plate D issupported by suitable lugs on a transverse pivot-shaft p, that issupported in recesses at the upper ends of supporting-brackets d,attached to the ends of the standards of the supporting-frame F of themachine,the pivot-shafts@ being provided at their outer ends withhandles for permitting the lifting of the delivery-plate and scraperfrom standards of the machine, as shown clearly in Fig. 1. By turningthe hand-wheel w in one or the opposite direction the crank-arms a, withtheir antifriction-rollers r, are raised, and thereby the delivery-plateD swung on its pivots, so that the edge of the scraper is placed inclose contact with the deliveryroller. When the edge of the Yscraper orthe roller wears off, the scraper fails to contact with thedelivery-roller and a slight adjustment of the hand wheel is necessary,

which produces, by means of the Worin trans-v mission and crank-arms, aslight lifting action on the lower end of the delivery-plate, so thatthe scraper is again placed in close contact with the delivery-roller.When the scraper has been used for some time, so as to be materiallyshortened, it is reset in the socket at the under side of the upper endof the delivery-plate, in which case the supporting crank-arms c arelowered, so as to provide for the extension of the scraper toward theroller. ment of the delivery-plate the scraper can be adjusted withgreat facility to a nicety relatively to the surface of thedelivery-roller, so that a perfect and reliable delivery of the coloronto the delivery-plate is obtained.

Having thus described my invention, lclaim as new and desire to secureby Letters Patent- 1. 1n a roller grinding-mill, the combination, withthe delivery-roller, of an inclined delivery-plate pivoted near itsupper end in proximity thereto, a shaft extending beneath saiddelivery-plate and provided with crankarrns operable to abut against thelower end By means of the worm-gear adjustportion thereof in order topivotally adjust the same upon the rocking of said shaft, and means foractuating said shaft.

2. In a roller grinding-mill, the combination, with the delivery-roller,of a deliveryplate provided with pivots near its upper end, a scrapersecured to the upper end of said delivery-plate, su pporting-bracketsfor supporting the shaft of the latter, a transverse shaft supported inbearings in said brackets, crankarrns mounted on sai-d shaft andprovided with antifriction-rollers bearing on the lower end of thedelivery-plate, a worin-segment on said shaft, a worin-shaft providedwith a worm engaging with the worm-segment, and a handlwheel at theouter end of said worm-shaft for operating the worm-gear so as to adjustthe scraper relatively to the surface of the delivery-roller.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

ALBERT J. FORD.

Witnesses:

PAUL GOEPEL, HENRY J. SUI-IRBIER.

